Home / 2,120.40-2,927.28-1,598.64

Finding the Fourth Proportional to 2,120.40, 2,927.28 and 1,598.64

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Solution

The fourth proportional to 2,120.40, 2,927.28 and 1,598.64 is: 2,206.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,120.40 : 2,927.28 = 1,598.64 : x
  2. Step 2: Convert to fraction form
    2,120.40/2,927.28 = 1,598.64/x
  3. Step 3: Cross multiply
    2,120.40x = 2,927.28 × 1,598.64
  4. Step 4: Simplify right side
    2,120.40x = 4,679,666.90
  5. Step 5: Solve for x
    x = 4,679,666.90/2,120.40
  6. Step 6: Final answer
    x = 2,206.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.